(PhysOrg.com) -- Friction limits the speed and efficiency of macroscopic engines. Is this also true for nanomachines? A Dresden research team used laser tweezers to measure the friction between a single motor protein molecule ...
Biotechnology
Aug 14, 2009
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Every cell lining the small intestine bristles with thousands of tightly packed microvilli that project into the gut lumen, forming a brush border that absorbs nutrients and protects the body from intestinal bacteria. In ...
Cell & Microbiology
Jun 29, 2009
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(PhysOrg.com) -- By using ultrafast laser pulses to slice off pieces of chromosomes and observe how the chromosomes behave, biomedical engineers at the University of Michigan have gained pivotal insights into mitosis, the ...
Biotechnology
May 29, 2009
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(PhysOrg.com) -- Certain fish species blend with their environment by changing color. Sandia National Laboratories researchers have demonstrated that, in theory, they could cause synthetic materials to change color like ...
Nanomaterials
Apr 17, 2009
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Chemists at New York University and Harvard University have created a bipedal, autonomous DNA "walker" that can mimic a cell's transportation system. The device, which marks a step toward more complex synthetic molecular ...
Biochemistry
Apr 2, 2009
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Chemists at the University of Illinois have created a simple and inexpensive molecular technique that replaces an expensive atomic force microscope for studying what happens to small molecules when they are stretched or compressed.
Nanophysics
Mar 29, 2009
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Spartin, a protein linked to the neuronal disease Troyer syndrome, was thought to function in endocytosis. In the March 23, 2009 issue of the Journal of Cell Biology, Eastman et al. identify an unexpected role for Spartin ...
Cell & Microbiology
Mar 23, 2009
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Specialized motor proteins that transport cargo within cells could be turned into nanoscale machines for drug delivery, according to bioengineers. Chemical alteration of the proteins' function could also help inhibit the ...
Biotechnology
Mar 20, 2009
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(PhysOrg.com) -- An international team of scientists led by the University of Leeds has shed new light on the little-understood motor protein called dynein, thought to be involved in progressive neurological disorders such ...
Feb 5, 2009
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(PhysOrg.com) -- Anyone who has ever battled a stuck zipper knows it's a good idea to see what's stuck, where and how badly -- and then to pull hard. A Cornell research team's experiments involve the "unzipping" of single ...
Jan 28, 2009
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